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Old 07-14-2004, 06:44 AM   #1
stpg
LQ Newbie
 
Registered: Jun 2004
Distribution: Fedora Core 2
Posts: 11

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Angry Writing to /dev/usb/hiddevX and to /proc/bus/usb/00B/00S throw an arror EINVAL


Ok. I want READ/WRITE to my PIC16 (usb hid )and can't do this. maybe ill must use ioctl but cant find any examples. Here the my suxx code

unsigned char outbuff[USB_BUFFSIZE]; //USB output buffer. 1 byte for report, 8 bytes for the PIC

//char * dev = "/dev/usb/hiddev0"; <--- this is real my device
char * dev = "/proc/bus/usb/003/001"; <-- too


if ((fd = open(dev, O_RDWR|O_NONBLOCK|O_SYNC)) < 0) {
////
}
int bytes = write(dev,outbuff,USB_BUFFSIZE);
//------------------------------------/
executing
bytes == -1; )
errno == EINVAL;

BTW i have a root permissions.

Last edited by stpg; 07-14-2004 at 08:46 AM.
 
  


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